Toshiba M-672 User manual

TOSHIBA
FILE NO. 120-9601
RDER
M-672, M-672C
M-65, M-65C
PRINTED IN KOREA, MAY, 1996

2. DISASSEMBLY & REASSEMBLY
2-1. INSTRUMENT DISASSEMBLY
2-l-l. Bottom Cover Removal
1. Remove two (2) screws holding the bottom cover.
2. Release two
(2) tabs from the bottom cover.
0 REMOVE TWO SCREWS
LEASE TWO TABS
Fig. 1 Bottom Cover Removal
2-l-2.Top Cabinet Removal
1. Remove three(3)screws located at the rear of the top
cabinet.
2. Carefully lift the back of the top cabinet and slide it to
the rear to remove.
2-l-3. Front Panel Removal
1. Remove bottom cover and top cabinet (See Fig. 1 to 2).
2. Release three (3) tabs from the bottom of the front
panel.
3. Release four (4) tabs from the top of the front panel.
4. Tilt the front panel forward to remove.
EASE FOUR TABS
THREE TABS
Fig. 3 Front Panel Removal
Fig. 2 Top Cover Removal
2-1

2-2-l. Function PCB Removal
1. Follow the procedures for removing the bottom cover,
the top cabinet and the panel front. (See Fig.1 to
3)
2. Release five (5) tabs on the function board.
3. Release
connector(CN701) gently with using the Driver
as shown Fig. 4
2-2-3. Main circuit board Removal
Fig. 4 Function PCB Removal
2-2-2. Deck Ass’y Removal
1. Follow the procedures for removing the bottom cover,
top cabinet and the front panel
ass'y (See Fig.1 to 3)
2. Remove four (4) screws from the bottom and top of the
deck ass’y.
3. Remove two (2) screws from the bottom of the frame.
4. Lift the deck ass’y upward to remove.
OREMOVE FOUR SCREWS
1 .Follow the procedures for removing Fig. 1 to 6
2.Release three (3) tabs from the frame.
3.Pull out the main circuit board in the direction of the
arrow.
RELEASE THREE
TABS
Fig. 6 Main Circuit Board Removal
Fig. 5 Deck ass’y Removal
2-2

Fig. 7 Instrument Assembly Removal
1. Remove screws
( @, @I 1 and release the bottom cover.
2. Remove screws
( (D, @, @I 1 and release the top cover.
3. Release the front panel as shown in Fig. 3
4. Release connector
(CN701) gently with using the Driver
as shown Fig. 4
5. Remove screws
( @, Q (8 Q), @ ) holding the deck and
follow the procedures on next page.
2-3

t TIGHTEN THE SCREW
Fig. 8 Trouble Shooting Posture
1. Set the main PCB
& DECK ass’y as shown in Fig. 8.
2. Tighten the screw.
3. Install the Function PCB to Main PCB
2-4

2-5. TAPE TRANSPORT MECHANISM IDENTIFICATION
2-5-l. Deck (lop View)
1
2 3
456
7 89 10 11 12 13 14
29
28
.
25 21 20 19
(Top View))Fig.9 Deck Parts Locations
FULL ERASE HEAD
STOPPER TAPE
1.
2.
3.
4.
5.
6.
7.
8.
9.
11. ARM REVIEW ASS’Y
12. UNIT PINCH ROLLER ASS’Y
SLIDE GEAR LOADING ASS’Y
“T” 13. SPRING SLIDE PUSH
HEAD BRUSH ASS’Y 14. SLIDE PINCH
CYLINDER ASS’Y 15. SLIDE RACK HOUSING
BRAKE SUB “L” 16. LEVER REVIEW
SLIDE GEAR LOADING ASS’Y “S” 17. SPRING BRAKE SUB “R”
LEVER PINCH COMP 18. BRAKE SUB “R” ASS’Y
FULL ACE HEAD ASS’Y 19. REEL DISK “R” ASS’Y
21. GEAR RELAY
“T” ASS’Y
22. IDLER ASS’Y
23. PRISM LED
24. GEAR RELAY “S” ASS’Y
25. BRAKE MAIN
“L” ASSY
26. REEL DISK “L”
ASS'Y
27. LEVER REC SWITCH
28. SPRING REC SWITCH
29. ARM TENSION FULL ASSY
10. LEVER PINCH CAM 20. BRAKE MAIN
“R” ASS’Y
2-5

2-5-2. Deck (Bottom View)
Fig. 10 Deck Parts I
Locations (Bottom View)
ii
a
1.LEVER SLIDE PINCH
2. MOTOR
D.D CAPSTAN
3. BELT CAPSTAN
4. BRAKE CAPSTAN ASS’Y
5. GEAR LOADING “R” ASS’Y
6. MOTOR CYLINDER
7. GEAR LOADING "L” ASS’Y
8. SLIDE MAIN
9. LEVER REC SWITCH
10. LEVER IDLER CHANGE
11. CLUTCH
ASS'Y
12. UNIT LOADING
13. GEAR MASTER
2-B

2-6. Housing Assembly
1
2
3
67 5 4
Fig. 11 Housing Parts Locations
1. CHASSIS SIDE ‘I” ASS’Y
2. UPPER CHASSIS
3. CHASSIS SIDE
“R” ASS’Y
4. SHAFT ARM ASS’Y
5. HOLDER CASSETTE ASS’Y
6. LEVER DOOR ASS’Y
7. DOOR LOCK
2-7

2-6-l. Removal from Main Base
1) Remove three(3) screws 0.
2) Lift the housing ass’y in the direction of arrow ‘B’ while pushing the tab a in the direction of arrow ‘A’.
(Refer to detail drawing)
MAIN BASE
I
<DETAIL>
NOTE : When p ushing the tab(2) in the direction of
arrow “A”, take extreme care not to damage
Fig. 12 Housing Ass’y Removal from Main Base
2-8

2-6-2. Disassembly
CHASSIS SIDE ‘L’
- CHASSIS UPPER
- HOLDER CASSTE
ASSEMBLY
SIDE” R "
SHAFT ARM ASSEMB
Fig. 13 Housing Ass’y Removal
2-9

2-6-3. Upper Chassis Removal
1) Remove two(2) screws a.
21 Lift the upper chassis QI in the direction of arrow ‘A’
Fig. 14 Upper Chassis Removal
2-10

2-6-4. Holder Cassette Ass’y & Chassis Side L/R Removal
1) Lift the holder cassette (D in the direction of arrow ‘A’ (Refer to Fig. A).
2) Remove the chassis side ‘C @ & ‘R’ @ from shaft arm ass’y @ in the direction of arrows ‘B’, ‘C’ (Refer to Fig. B).
NOTE : If you operate the deck when the holder cassette ass’y is removed, the shaft arm “R’ and the slide damper are not
returned to their original position. If this happens by accident, push the slide damper of chassis side ‘R’ in the
direction of arrow "D", and return the slide damper in the reverse direction of arrow "D" when the shaft arm ass’y is in
eject mode.
a HOLDER CASSETTE ASSEMBLY
@CHASSIS SlDE l L-
0 SHAFT ARM ASSEMBLY
-+N
a CHASSIS SIDE "R"
[Fig.1
Fig. 15 Holder Cassette Ass’y & Chassis Side L/R Removal
( REASSEMBLY OF CHASSIS
SIDE-R’& SHAFT ARM’W” 1
SIDE VIEW
II
(D)
SLIDE DAMPER

2-6-5. Chassis Side “R” Parts Locations
SPRING
(SIDE VIEW “A”)
LEVER-LID OPENER CHASSIS SIDE
“R
SLIDE - DAMPER
SPRING-SLIDE DAMPER
Fig. 16 Chassis Side ‘R’ Parts Locations
2-12

2-6-6. Slide Damper Removal
1) Remove the spring slide damper @.
2) Push the stopper @of the chassis side ‘R’ @. Move the slide damper @in the direction of arrow.
3) Align the slide damper QI with the chassis side tab (as shown detail drawing).
4) Lift the slide damper @to remove.
@ SPRING SLIDE DAMPER
)
@ SLIDE DAMPER
@ STOPPER
I
CHASSIS SIDE “R
SLIDE DAMPER
<DETAIL>
Fig. 17 Slide Damper Removal
2-13

2-7. Cylinder Ass’y
2-7-2. Stopper Tape
2-7-l. Exploded View of Cylinder Ass’y
F-
ONE SCREW
HEAD BRUSH
- MOTOR - STATOR
p THREE
SCREWS
- - MOTOR - ROTOR
SCREWS
CYLINDER BASE
(1) Stopper Tape Removal
(Only for deck : DXS-R, Refer to Fig. A)
1) Release one(l) tab @in the direction of arrow ‘A’.
(Refer to detail drawing)
2) Lift the stopper tape 0, in the direction of arrow ‘B’.
@STOPPER TAPE
Fig. 19 Stopper Tape Removal
Fig. 18 Exploded View of Cylinder Ass’y
2-14

2-7-3. Cylinder Ass’y Removal from Main Base 2-7-4. Head Brush &Holder FPC Removal
1) Remove threef3) screws @holding the main base and
the cylinder ass’y.
2) Lift the cylinder ass’y Q in the direction of arrow.
NOTE : Do not touch the video heads during removal or.
installation.
@ THREE SCREWS
1) Remove one(l) screw @and then lift the head brush a.
2) Release the holder FPC tab holding the cylinder base @
in the direction of arrow. (Refer to detail drawing)
3) Disconnect the holder FPC @from the cylinder base 0.
NOTE : When disconnecting the holder FPC @from the
j
cylinder base 0: Take care not to disconnect the
FPC cable from the holder FPC (The FPC cable is
IF---
@ ONE SCREW
0 HEAD BRUSH
@ HOLDER FPC
@ CYLINDER BASE
HOLDER FPC TAB
Fig. 20 Cylinder Ass’y Removal from Main Base
J
I<DETAIL : BOTTOM VIEW>
Fig. 21 Head Brush & Holder FPC Removal
2-15

2-7-5. Cylinder Ass’y Removal from Cylinder Base
1) Remove three(3) screws 0 from the cylinder base @.
2) Lift the cylinder ass) @from the cylinder base (p in the
direction of arrow.
2-7-7. Motor Rotor &Cylinder Sub Ass’y
1) Make sure that phase matching holes of the motor rotor
81 the cylinder sub ass’y are aligned correctly as shown in
Fig. 16 (Refer to phase matching hole)
2) Reinstall the retainer lever ass’y @and secure with
m CYLINDER ASS’Y
two(2) screws.
@ TWO SCREWS
@ RETAINER
RUBBER ASS’Y
7
@ CYLINDER BASE
ppa THREE SCREWS
Fig. 22 Cylinder Ass’y Removal from Cylinder Base
2-7-6. Motor Rotor Removal
1) Remove two(2) screws 0.
2) Lift the retainer lever ass’y @and the motor rotor @
@ TWO SCREWS
@ RETAINER
RUBBER ASS’Y
MOTOR - ROTOR
@ CYLINDER SUB ASS’Y
@ MOTOR - ROTOR
PHASE MATCHING
- HOLE
SUB ASS’Y
Fig. 24 Assembly of Motor Rotor & Cylinder Sub Ass’y
2-7-8. Motor Stator Removal
1) Remove three(3) screws @).
2) Remove the motor stator a from the cylinder sub
ass’y Q.
@ THREE SCREWS
@ MOTOR - STATOR
@ CYLINDER SUB ASSY
Fig. 25 Motor Stator Removal
2-l 6
Fig. 23 Motor Rotor Removal

2-7-9. Motor Stator & Cylinder Sub Ass’y 2-8. Main Deck Removal & Reassembly
1) Reinstall the motor stator (D toward the FPC cable of
cylinder sub ass’y Q.
2) Secure with three(3) screws. (Refer to Fig. 17)
. @ MOTOR - STA
- @ CYLINDER
SUB ASS’Y
,TOR
Fig. 26 Assembly of Motor Stator &Cylinder Sub Ass’y
SLOTS1
2-8-l. Slide Rack Housing Removal
1) Lift the slide rack housing in the direction of arrow.
SLIDE RACK HOUSING
Fig. 27 Slide Rack Housing Removal
2-8-2. Assembly of Slide Rack Housing & Gear
Master
1) Confirm that the hole of gear master @and the hole ‘A
of main base are aligned correctly. (Eject mode)
2) Align the slot #l of gear master a with the tooth #l of
slide rack housing. (Refer to timing point)
<DETAIL>
@ GEAR MASTER
@ SLIDER RACK
HOUSING
<TOP VIEW>
ARM ‘R
<SIDE VIEW>
Fig. 28 Assembly of Slide Rack Housing & Gear Master
2-17

2-8-3. Brake Sub “L” Removal 2-8-5. Reel Disk
‘I” Ass’y &Gear Relay “s”
Ass’y Removal
1) Remove the spring brake sub ‘L’ a.
2) Release the tab Q) in the direction of arrow.
(Refer to detail drawing)
3) Lift the brake sub ‘L 0.
r7-
@ SPRING-BRAKE SUB ‘L.
@ BRAKE-SUB ‘L”
@ TAB
@ BRAKE-SUB “L”
<DETAIL>
Fig. 29 Brake Sub ‘L’ Removal
2-8-4. Arm Tension Full Ass’y Removal
1) Remove the spring tension 0.
2) Release the tab Q in the direction of arrow.
(Refer to detail drawing)
3) Lift the arm tension full ass’y 0.
@ SPRING-TENSION
@ ARM-TENSION
FULL ASS’Y
@ ARM-TENSION
1) Release the tab (J) in the direction of arrow.
(Refer to detail drawing)
2) Lift the reel disk ‘L ass’y a.
3) Remove the washer plain a.
4) Remove the washer slit @.
5) Lift the gear relay ‘S’ ass’y a.
NOTE : When reinstalling, be sure to install the reel disk
‘L’ ass’y QI after installing the washer plain @.
@ REEL-DISK ‘L
ASSY
@I WASHER-PLAIN
@WASHER-SLIT
@ REEL-DISK “L’ ASSY
Q) TAB
I
<DETAIL>
Fig. 31 ReeL Disk ‘L’ Ass’y &Gear Relay ‘S’ Ass’y
Removal
Fig. 30 Arm Tension Full Ass’y Removal
2-18

2-8-6. Brake Sub “R” Ass’y Removal
1) Remove the spring brake sub ‘R’ a.
2) Release the tab Cp in the direction of arrow.
(Refer to detail drawing)
3) Lift the brake sub ‘R’ ass’y @.
@ BRAKE-SUB ‘R” ASSY
@ SPRING-BRAKE
SUB l R
I
I
<DETAIL>
Fig. 32 Brake Sub ‘R’ Ass’y Removal
2-8-7. Reel Disk “R” Ass’y & Gear Relay “T”
Removal
1) Release the tab a in the direction of arrow.
(Refer to detail drawing)
2) Lift the reel disk ‘R’ ass’y a.
3) Remove the washer plain 0.
4) Remove the washer slit 0.
5) Lift the gear relay ‘T’ ass’y @I.
NOTE : When reinstalling, be sure to install the reel disk
‘R’ ass’y 8) after installing the washer plain 0.
@WASHER-SLIT
@ REEL-DISK l R
ASSY
@ GEAR-RELAY 7” &-----@ WASHER-PLAIN
@ REEL-DISK “R
ASSY
@ TAB
1
<DETAIL>
Fig. 33 Reel Disk ‘R’ Ass’y & Gear Relay ‘T’ Removal
2-8-8. Brake Main “L”, “R” Ass’y Removal
1) Remove the spring brake main @.
2) Release the tab a in the direction of arrow ‘A’.
(Refer to detail drawing ‘A’)
3) Lift the brake main ‘L’ a.
4) Release the tab @in the direction of arrow ‘B’.
(Refer to detail drawing ‘B’)
5) Lift the brake main ‘R’ a.
0 SPRING-BRAKE MAIN
@ BRAKE-MAIN I’-
ASSY
@ BRAKE-MAIN “R
ASSY
,O TAB
<DETAIL “A”>
TAB
“B
@ BRAKE-MAIN
“R” ASSY
<DETAIL “B”>
Fig. 34 Brake Main ‘L’, ‘R’ Ass’y Removal
2-8-9. Idler Ass’y Removal
1) Remove the washer slit 0.
2) Lift the idler ass’y a.
@- @ WASHER-SLIT
Fig. 35 Idler Ass’y Removal
2-19